Aug 21, 2013

Sheet flow is slumping

Discharge is still flowing under Tamiami Trail,

But it's a shadow of its previous self.

This hydrograph gives a statistical and ecological
framework for understanding freshwater discharge
in the bridges under Tamiami Trail.

Just a month ago, the thirty five mile segment of Tamiami Trail that runs through Big Cypress National Preserve was deliverying over 4,000 cubic feet per second (cfs) of freshwater to the south. A month later in mid August that number has dropped to a fourth of its previous self -- just 1,000 cfs instead. That means all the bridges are still flowing, but the swamp's fabled sheet flow is no longer flowing in full.

The long-term average flow rate for this time of year is closer to 2,000 cfs.

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